Billy flew toward the monster, and he didn't wait for the last moment to use Enhanced Body and Destructive Aura. He also used all the other buffs that he had, and the monster realized that Billy was finally serious. Not paying attention to him would probably make the beast eat with his glaive with one of its eyes. That would be more than a little painful... so, it was time for the beast to change its approach.
The dragon flew toward Billy as well and then slashed both of its claws toward him. Billy swung his glaive, and then the impact happened that made small lightning bolts appear nearby them. With all his buffs, Billy's status got four times bigger, so he could match the monster in speed and strength, but not for long. Enhanced Body puts a lot of strain on the user, so he had to be careful. He won't feel anything until he deactivates the skill, but once he does, he would feel like someone had smashed his muscles hard with a war hammer.
The beast seemed surprised that someone so small could match itself in strength, so it took a while for the monster to react in any way. Still, the monster knew that Billy couldn't keep up with him forever, and the creature also wanted to win that confrontation, so it soon began to fly to attack him again.
As if that was a game of whack-a-mole that could counterattack, the dragon attempted to smash Billy many times. What was even more infuriating for the guardian was the fact that his weapon wasn't even showing any signs of damage. On the other hand, the dragon's claws were starting to pile up the damage. Even if the beast could repair those instantly, that was wounding its pride…
Both of them kept flying in the air, attacking and defending as if they were trying to prove something with that. Billy was just happy that he could test his full strength against something. He had never had that chance before. He was even happier because he was buying time for the others to attack…
"Are you not ready yet?" Icarus asked. "We already used all of our mana on the arrow."
"The monster is aware of us… I have the feeling that it will dodge, even if you enchanted his arrow with yours," Meryl replied. "I am waiting for the right moment."
"How would that even be possible… with my current mana, the arrow would fly like… around ten thousand kilometers per second,' Icarus said.
"Around? Like?" Lucyna asked. "Why do you sound so unsure?"
"I am not good at math, okay?" Icarus asked.
"Billy will get crazy mad if he learns that we were having this kind of talk while he was fighting that beast…" Lucyna said.
"I am totally out of mana, so I can't make an opening… Regardless, how the hell does Billy have so much of it?" Icarus asked. "He doesn't have any skill that grants him extra mana at least not on absurd levels. The skills that restore his mana works overtime, but even with his mana pool… he uses too much than he is supposed to have."
"I am starting to become a bit more sensitive when it comes to mana, and I believe that he has something on his back that helps him with that," Lucyna said.
"I never saw anything weird on his back when he was in the bathtub," Icarus said.
"Enough with the pointless talk… I am concentrating here," Meryl said.
As if Billy knew that Meryl was waiting for him to give her an opening. He suddenly increased the output of his Destructive Aura, and when the monster attacked him again, the swing of his glaive pushed the arms and the entire body of the beast backward. The surprise was clear on the dragon's face, and before the beast could recover from it, Meryl fired the arrow.
The beast knew that something was coming before, and it had confidence that it could block that attack. However, Billy's strike, the fact that the monster had been fighting him for real, the cooperation that they put in that arrow… All those factors increased the chance of the attack succeeding, and thanks to that, even before the monster could think of reacting… The chromium arrow pierced its heart and the monster's body.
"Dumbass… at least go for the brain to prevent the monster thinking of healing its own body!" Billy thought.
An explosion happened, and the impact of the arrow forced the dragon to head in that direction as well. In the end, the beast was engulfed in that massive shockwave of mana that made the entire continent tremble. Billy and the others were pushed toward the other end of the room, but he used Telekinesis to stop himself. The job wasn't over… He didn't get any notification, after all.
Billy prepared to attack again, and this time, he was planning to bet everything on the next attack. He couldn't afford to make a mistake. Otherwise, he will have to use his trump card.
When he finally had the chance, Billy flew toward the center of the explosion since there were no signs of the dragon falling. The massive amount of mana there made his skin crawl and even damage it since the attack had tons of mana given by four reincarnated individuals. In the end, Billy saw the dragon flying in the middle of the dust and smoke, waiting for its wound on the chest to heal. Still, the creature was having a hard time closing the wound because the wound was caused by the mana of four people like Billy. It probably some of it entered its system and was slowing down the healing speed.
Billy wanted to know how the monster could flap its wings when the heart was making his blood, but that wasn't the right moment. Before the dust and smoke could dissipate, Billy equipped the Light Speed Sword.